Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue:
Rents	$ 461,387	$ 437,560	$ 441,329
Tenant reimbursements	79,087	77,060	77,404
Termination Fees	4,497	3,233	2,951
Third party management fees, labor reimbursement and leasing	13,053	12,116	11,536
Other	4,186	5,710	5,348
Total revenue	562,210	535,679	538,568
Operating Expenses:
Property operating expenses	160,406	152,319	159,768
Real estate taxes	55,612	53,402	51,433
Third party management expenses	5,751	5,127	5,590
Depreciation and amortization	197,021	188,382	202,933
General and administrative expenses	27,628	25,413	24,602
Total operating expenses	446,418	424,643	444,326
Operating income	115,792	111,036	94,242
Other Income (Expense):
Interest income	1,044	3,008	1,810
Historic tax credit transaction income	11,853	11,840	12,026
Interest expense	(121,937)	(132,939)	(131,405)
Interest expense - amortization of deferred financing costs	(4,676)	(6,208)	(4,991)
Interest expense — financing obligation	(972)	(850)	0
Recognized hedge activity	0	(2,985)	0
Equity in income of real estate ventures	3,664	2,741	3,775
Net gain from remeasurement of investments in real estate ventures	6,866	0	0
Net gain on sale of interests in real estate	0	0	2,985
Net gain (loss) on sale of undepreciated real estate	(137)	0	0
Net gain (loss) on real estate venture transactions	29,604	(950)	(222)
Gain (loss) on early extinguishment of debt	(2,119)	(22,002)	(2,776)
Income (loss) from continuing operations	38,982	(37,309)	(24,556)
Discontinued operations:
Income from discontinued operations	825	9,064	12,794
Net gain (loss) on disposition of discontinued operations	3,382	34,774	7,047
Total discontinued operations	4,207	43,838	19,841
Net income (loss)	43,189	6,529	(4,715)
Net income from discontinued operations attributable to non-controlling interests - LP units	(55)	(797)	(778)
Net (income) loss attributable to non-controlling interests — LP units	357	(863)	(994)
Net (income) loss attributable to non-controlling interests	(412)	66	216
Net income (loss)	42,777	6,595	(4,499)
Distribution to Preferred Shares	(6,900)	(10,405)	(7,992)
Preferred share/unit redemption charge	0	(4,052)	0
Amount allocated to unvested restricted shareholders	(363)	(376)	(505)
Net income (loss) attributable to Common Shareholders/Unitholders	35,514	(8,238)	(12,996)
Basic income (loss) per Common Share/Unit:
Continuing operations (in dollars per share)	$ 0.20	$ (0.36)	$ (0.24)
Discontinued operations (in dollars per share)	$ 0.03	$ 0.30	$ 0.14
Basic income (loss) per Common Share (in dollars per share)	$ 0.23	$ (0.06)	$ (0.10)
Diluted income (loss) per Common Share/Unit:
Continuing operations (in dollars per share)	$ 0.20	$ (0.36)	$ (0.24)
Discontinued operations (in dollars per share)	$ 0.03	$ 0.30	$ 0.14
Diluted income (loss) per Common Share/Unit (in dollars per share)	$ 0.23	$ (0.06)	$ (0.10)
Basic weighted average shares outstanding (in shares)	153,140,458	143,257,097	135,444,424
Diluted weighted average shares outstanding (in shares)	154,414,311	143,257,097	135,444,424
Net income (loss)
Income (loss) from continuing operations	38,625	(36,446)	(23,562)
Income (loss) from discontinued operations	4,152	43,041	19,063
Net income (loss)	42,777	6,595	(4,499)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue:
Rents	461,387	437,560	441,329
Tenant reimbursements	79,087	77,060	77,404
Termination Fees	4,497	3,233	2,951
Third party management fees, labor reimbursement and leasing	13,053	12,116	11,536
Other	4,186	5,710	5,348
Total revenue	562,210	535,679	538,568
Operating Expenses:
Property operating expenses	160,406	152,319	159,768
Real estate taxes	55,612	53,402	51,433
Third party management expenses	5,751	5,127	5,590
Depreciation and amortization	197,021	188,382	202,933
General and administrative expenses	27,628	25,413	24,602
Total operating expenses	446,418	424,643	444,326
Operating income	115,792	111,036	94,242
Other Income (Expense):
Interest income	1,044	3,008	1,810
Historic tax credit transaction income	11,853	11,840	12,026
Interest expense	(121,937)	(132,939)	(131,405)
Interest expense - amortization of deferred financing costs	(4,676)	(6,208)	(4,991)
Interest expense — financing obligation	(972)	(850)	0
Recognized hedge activity	0	(2,985)	0
Equity in income of real estate ventures	3,664	2,741	3,775
Net gain from remeasurement of investments in real estate ventures	6,866	0	0
Net gain on sale of interests in real estate	0	0	2,985
Net gain (loss) on sale of undepreciated real estate	(137)	0	0
Net gain (loss) on real estate venture transactions	29,604	(950)	(222)
Gain (loss) on early extinguishment of debt	(2,119)	(22,002)	(2,776)
Income (loss) from continuing operations	38,982	(37,309)	(24,556)
Discontinued operations:
Income from discontinued operations	825	9,064	12,794
Net gain (loss) on disposition of discontinued operations	3,382	34,774	7,047
Total discontinued operations	4,207	43,838	19,841
Net income (loss)	43,189	6,529	(4,715)
Net income (loss)	43,189	6,529	(4,715)
Distribution to Preferred Shares	(6,900)	(10,405)	(7,992)
Preferred share/unit redemption charge	0	(4,052)	0
Amount allocated to unvested restricted shareholders	(363)	(376)	(505)
Net income (loss) attributable to Common Shareholders/Unitholders	35,926	(8,304)	(13,212)
Basic income (loss) per Common Share/Unit:
Continuing operations (in dollars per share)	$ 0.20	$ (0.36)	$ (0.23)
Discontinued operations (in dollars per share)	$ 0.03	$ 0.30	$ 0.14
Basic income (loss) per Common Share (in dollars per share)	$ 0.23	$ (0.06)	$ (0.09)
Diluted income (loss) per Common Share/Unit:
Continuing operations (in dollars per share)	$ 0.20	$ (0.36)	$ (0.23)
Discontinued operations (in dollars per share)	$ 0.03	$ 0.30	$ 0.14
Diluted income (loss) per Common Share/Unit (in dollars per share)	$ 0.23	$ (0.06)	$ (0.09)
Basic weighted average shares outstanding (in shares)	154,929,545	145,883,217	145,118,841
Diluted weighted average shares outstanding (in shares)	156,203,398	145,883,217	145,118,841
Net income (loss)
Income (loss) from continuing operations	38,982	(37,309)	(24,556)
Income (loss) from discontinued operations	4,207	43,838	19,841
Net income (loss)	$ 43,189	$ 6,529	$ (4,715)